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Finding the Fourth Proportional to 156,891.84, 216,505.44 and 89,810.88

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Solution

The fourth proportional to 156,891.84, 216,505.44 and 89,810.88 is: 123,935.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,891.84 : 216,505.44 = 89,810.88 : x
  2. Step 2: Convert to fraction form
    156,891.84/216,505.44 = 89,810.88/x
  3. Step 3: Cross multiply
    156,891.84x = 216,505.44 × 89,810.88
  4. Step 4: Simplify right side
    156,891.84x = 19,444,544,091.19
  5. Step 5: Solve for x
    x = 19,444,544,091.19/156,891.84
  6. Step 6: Final answer
    x = 123,935.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.